Optima’s design follows humanist lines; its capitals (like those of Palatino, Hans Eduard Meier’s Syntax and Carol Twombly's Trajan) are directly derived from the classic Roman monumental capital model, reflecting a reverence for Roman capitals as an ideal form.
Zapf began his design while visiting Italy in 1950 and examining inscriptions there, especially at the cemetery of the Basilica di Santa Croce in Florence; an early draft of the design was quickly sketched on a 1000 lira banknote.[4][3]
In his book About Alphabets, Zapf commented that his key aim, inspired by Roman alphabets, was the desire to avoid the monotony of all capital letters having a roughly square footprint, as he felt was true of some early sans-serif designs. Optima's 'E' and 'R' occupy a half-square, while the 'M' is splayed.[5]
Optima is an example of a modulated-stroke sans-serif, a design type where the strokes are variable in width. The design style has been intermittently popular since the late nineteenth century; Optima is one of the most lastingly popular examples of the genre. Optima was originally targeted by Stempel's Walter Cunz as a competitor to Ludwig & Mayer's Colonia design, which has not been digitised.[6][7] Shaw also suggests the little-known 1948 design Romann Antiqua, as well as Stellar by Robert Hunter Middleton as predecessors, and notes the existence of Pascal by José Mendoza y Almeida (1962) as a design with a similar set of influences.